Columbia County topped all other Washington counties in voter turnout Tuesday, with over 80 percent of the 2,590 registered voters turning in ballots.
Garfield County had the second-highest turnout, with 75 percent, or 1,158 of the 1,537 voters participating.
Walla Walla County voters outdistanced the state turnout of 40 percent, but with 13,053 ballots in out of 30,183 registered voters, the rate fell short of 50 percent, with 43 percent voting.
All three counties, however, will likely see significant increases in the turnout percentage after outstanding ballots are counted.
Statewide, an estimated 536,225 ballots remain to be processed.
Columbia County will count the 150 uncounted ballots on hand, plus any that were mailed Tuesday, at 11:30 a.m. Nov. 23.
Garfield and Walla Walla counties plan to count outstanding ballots Friday. Garfield County had 25 ballots on hand, while Walla Walla County election officials have 4,432 ballots uncounted.